ausboss
abd899afe2
Over plain http (ComfyUI on a LAN address) the page has no Clipboard API, and the optional-chained write resolved without copying anything, so the buttons showed a success they had not earned. One shared helper now falls back to the copy command and says whether the text really reached the clipboard; the buttons show a failure mark when it did not.
39 lines
1.3 KiB
JavaScript
39 lines
1.3 KiB
JavaScript
// Copy text and report whether it really reached the clipboard.
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//
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// The async Clipboard API exists only in secure contexts (https, localhost).
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// ComfyUI served over plain http to a LAN address has no
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// navigator.clipboard at all, so the older copy command is the fallback;
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// browsers still honour it inside a click handler. Callers show success only
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// on a true result.
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//
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// No app import, so tests/clipboard.test.mjs drives it with fakes through
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// `env`.
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export async function copyToClipboard(text, env = {}) {
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const clipboard = "clipboard" in env ? env.clipboard : globalThis.navigator?.clipboard;
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const doc = "document" in env ? env.document : globalThis.document;
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const value = String(text ?? "");
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if (typeof clipboard?.writeText === "function") {
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try {
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await clipboard.writeText(value);
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return true;
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} catch {
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// Permission refused: try the copy command below.
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}
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}
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if (!doc?.body || typeof doc.execCommand !== "function") return false;
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const area = doc.createElement("textarea");
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area.value = value;
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area.setAttribute("readonly", "");
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area.style.position = "fixed";
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area.style.opacity = "0";
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doc.body.appendChild(area);
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try {
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area.select();
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return doc.execCommand("copy") === true;
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} catch {
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return false;
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} finally {
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area.remove();
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}
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}
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